#!/bin/sh
# Start/stop/restart the NFS server.
#
# This is an init script for the knfsd NFS daemons.
# To use NFS, you must first set up /etc/exports.
# See exports(5) for information on /etc/exports format.
#
# Written for Slackware Linux by Patrick J. Volkerding <volkerdi@slackware.com>.

nfsd_start() {
  # Sanity checks.  Exit if there's no /etc/exports, or if there aren't any
  # shares defined in it.
  if [ ! -r /etc/exports ]; then # no config file, exit:
    exit
  elif ! grep -v '^#' /etc/exports | grep '/' 1> /dev/null 2> /dev/null ; then
    exit # no uncommented shares in /etc/exports
  fi

  # First, make sure the nfsd kernel module is loaded.  You can comment this
  # part out if you've built nfsd support directly into the kernel.
  if [ -z "`/sbin/lsmod | grep "^nfsd "`" ]; then
    /sbin/modprobe nfsd
  fi

  # For kernels newer than 2.4.x, use the new way of handling nfs client requests.
  if [ ! "$(/bin/uname -r | /bin/cut -f 1,2 -d .)" = "2.4" ]; then
    if grep -wq nfsd /proc/filesystems 2> /dev/null ; then
      if grep -vwq nfsd /proc/mounts 2> /dev/null ; then
        /sbin/mount -t nfsd nfsd /proc/fs/nfs 2> /dev/null
      fi
    fi
  fi

  # If basic RPC services are not running, start them:
  if ! ps axc | grep -q rpc.statd ; then
    if [ -r /etc/rc.d/rc.rpc ]; then
      sh /etc/rc.d/rc.rpc start
    else
      # Sure, we tested for rpc.statd, but this is the probable cause:
      echo "FATAL:  Can't start NFS server without portmap package."
      sleep 5
      exit 1
    fi
  fi

  echo "Starting NFS server daemons:"

  if [ -x /usr/sbin/exportfs ]; then
    echo "  /usr/sbin/exportfs -r"
    /usr/sbin/exportfs -r
  fi

  if [ -x /usr/sbin/rpc.rquotad ]; then
    echo "  /usr/sbin/rpc.rquotad"
    /usr/sbin/rpc.rquotad
  fi

  # Start 8 nfsd servers by default (an old Sun standard):
  if [ -x /usr/sbin/rpc.nfsd ]; then
    echo "  /usr/sbin/rpc.nfsd 8"
    /usr/sbin/rpc.nfsd 8
  fi

  if [ -x /usr/sbin/rpc.mountd ]; then
    echo "  /usr/sbin/rpc.mountd"
    /usr/sbin/rpc.mountd
  fi

}

nfsd_stop() {
  killall rpc.mountd 2> /dev/null
  killall nfsd 2> /dev/null
  sleep 1
  killall -9 nfsd 2> /dev/null # make sure :)
  killall rpc.rquotad 2> /dev/null
  /usr/sbin/exportfs -au 2> /dev/null
}

nfsd_restart() {
  nfsd_stop
  sleep 1
  nfsd_start
}

case "$1" in
'start')
  nfsd_start
  ;;
'stop')
  nfsd_stop
  ;;
'restart')
  nfsd_restart
  ;;
*)
  echo "usage $0 start|stop|restart"
esac
